Chlorine.............|.......171.60.......................|...239.11
Bromine.............|........265.80......................|...332.0
Iodine................|........386.85......................|....457.40
Astatine.............|..........575..........................|.....610(?)
The chemical element with the atomic number 1 is Hydrogen.
Fluorine (F2) Melting point 53.53 K, −219.62 °C, −363.32 °F
Lowest boiling point: Fluorine −188.12 °C
Highest boiling point: Iodine 184.3 °C
Others in between, At is not natural occurring.
Hydrogen has the lowest atomic number.
helium with an atomic number of 2
Fluorine with −219.52 °C (53.6 K)
Hydrogen
Fluorine
O
Hydrogen, the element with the lowest atomic number.
The element with the lowest atomic number in period 3 is sodium (Na) with an atomic number of 11.
Technetium - its atomic number is 43.
Atomic number: The number of protons in an atomic nucleus. (http://www.answers.com/topic/atomic-number) So the lowest atomic number is 1, which is hydrogen, as you cannot have an element with less than one proton.
The atomic number of an element is how many protons is in it. So the chart is arranged lowest atomic number to highest.
Hydrogen is a non metal element. Atomic number of it is 1. It is the element with lowest atomic number.
Hydrogen, the element with the lowest atomic number.
The element with the lowest atomic number in period 3 is sodium (Na) with an atomic number of 11.
The solid element with the lowest atomic number is lithium, with an atomic number of 3.
Hydrogen is a none metal element. atomic number of it is 1.
Uranium
Technetium - its atomic number is 43.
what is boron
Berylium is a non metal element. Atomic number of it is 4.
Oxygen is the element having atomic number 8. It is present in group-16.
Atomic number: The number of protons in an atomic nucleus. (http://www.answers.com/topic/atomic-number) So the lowest atomic number is 1, which is hydrogen, as you cannot have an element with less than one proton.
This element is beryllium (Be).